Centrifugal liquid-separator.



No. 894,855. PATENTED AUG. 4, 1908.

E, W. RICHMOND.

UENTRIFUGAL LIQUTD SEPARATOR. APPLICATION FILED MAY 10, 1907.

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INVENT'QR, ERNEST WEBBER RICHMOND,

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PATENTED AUG. 4, 1908.

E. W. RICHMOND. OEN-TRIPUGAL LIQUID SEPARATOR.

APPLIGATION FILED MAY 10, 1907- 5 SHEETS-SHEET 3.

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WITNESSES;

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- E. W. RICHMOND. GENTRIFUGAL LIQUID SEPARATOR.

APPLICATION FILED MAY 10, 1907.

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WlTNESSES;

nw whoa b ERNESTWEBBER RICHMQND ERNEST WEBBER RICHMOND, OF DURSLEY, ENGLAND, ASSIGNOR TO R. A. LISTER AND COMPANY LIMITED, OF DURSLEY, ENGLAND.

CENTRIFUGAL LIQUID-SEPARATOR.

Specification of Letters Patent.

Patented Aug. 4, 1908.

Application filed May 10, 1907. Serial No. 372,873.

To all whom it may concern:

Be it known that I, ERNEST WEBBER R1011- uoND, a subject of the King of Great Britain, residing at Prospect House, Dursley, in the county of Gloucester, England, mechanical engineer, have invented certain new and useful Improvements in Centrifugal Liquid- Separators, of which the following is a specification.

This invention refers to im rovements in separators, and has for its object the provision of effective means for the conveyance of the heavier liquid which collects near the walls of the separator bowl to the top where the passages out of the bowl are provided.

The invent-ion is particularly intended for cream separators and consists in the provision of a skimming shield, adapted for sitting over the separating cones, disks, liner plates, orthe like, under the coned cover of the separator bowl, and providing the necessary passages to the top of the bowl. The skimmmg shield has provision for being firmly held in place and communicates with the lower part of the bowl over the separatmg means.

The preferred manner of carrying out the invention is to construct the skimming shield of conical shape from pressed steel or other suitable material and to provide it with a neck either integral with it or secured thereto. The skimming shield is pressed with a plurality of grooves on its sides extending from the bottom to the upper part where the neck commences. These grooves are arranged at regular intervals in the sides of the skimming shield, a convenient number for ordinary uses being four. The neck of the skimming shield is for the purpose of securing its shield in osition and for the conveyance of the cream rom the center of the bowl, and may be either ressed in one therewith or be separately ormed and secured thereto. one, two, or more snugs or projections on its exterior adapted when the skimming shield is in position to engage one or more radial inclined. pieces standing proud of the top of the coned or outer cover of the bowl. In securing the said shield in position it is placed over the separating means in the separator bowl and its neck projects through a central aperture formed in the cover of the bowl, the lugs on the neck passing through slots in the cover provided to take them; the neck is then given a partial turn so as to cause the It has snugs or projections to ride upon the inclined planes tightly locking the skimming shield against the cover. When in this position, the grooves in the sides of the shield acting in conjunction with the interior of the cover, form complete tubes up which the skim milk passes from around the walls of the bowl to the top of the cover where the slots in the cover for passin the locking snugs on the skimming shield orm exits for it. The neck as will be seen also forms a tube for the conveyance out of the bowl of the cream which accumulates at the center.

As a modification I may form the passages on the exterior of the skimming shield, by securing gutters thereon instead of pressing the grooves in, or I may press up parallel ribs on the exterior to form troughs, and either of these methods provide complete tubes when the shield is locked in position beneath the top.

On the explanatory drawings ap ended hereunto :Figure 1 shows a section t rough a separator bowl with the cover on and my invention applied thereto. Fig. 2 is a plan of same. Fig. 3 is a sectional elevation of the skimming shield. Fig. 4 is a lan of skimming shield. Fig. 5 is a sectiona elevation of the upper part of the skimming shield, at right angles to Fig. 3. Fig. 6 is a side view of the cover of the separator bowl. Fig. 7 is a vertical section, and Fig. 8 is a plan of same. Fig. 9 is an elevation of a modification of the skimming shield. Fig. 10 is a plan. Fig. '11 is a section of the same taken at line 0-01 of Fi 9, and Fig. 12 is a partial sectional view 0 the cover and skimming shield showin the means whereby the latter is drawn tight y against the inner contour of the former.

On the drawings, B is the separator bowl, and O is the conical cover while the separatiglg means are shown as cones and represented The skimming shield is indicated by T. At Figs. 3, 4 and 5, the shield is shown in its preferred form. It is pressed from sheet metal and given the shape of a truncated cone. The walls are formed with grooves t ressed in their outer surfaces extending from the bottom edge to the oint where the cone sha e finishes in a flat s oulder t Integral with the cone shaped part a neck N is pressed which is provided with a strengthemng lining n and with the snugs or projections M. The cover 0 of the bowl is similarly of truncated cone sha e and has a central aperture c at the to 6n each side of the aperture an inclined aced projection c is formed as clearly seen at Figs. 6, 7, and 8. The projections or snugs n on the neck N of the skimming shield, pass slots 0 in the cover C, as the neck is passed through the central a erture when the shield and the cover are p aced in position, and are adapted to ride up the gradients c and secure the skimming shield tight against the cover when the neck is partially rotated.

When the skimming shield T is in proper position in the bowl as seen at Fig. l, the groove t pressed in its outer surfaces in conjunction with the inner faces of the cover C forms complete tubes for the conveyance of the heavier liquids from the sides of the bowl where it accumulates to the top, where it passes out through the slots 0 in the cover. In this way provision is made which effects the ready clearance of the skim milk from the bowl and greatly facilitates the work of separation.

In the modification shown at Figs. 9 to 11, the passages for the skim milk on the skimming shield T are formed by soldering or otherwise securing troughs or arallel ribs 25 on the exterior. The part T ffas a flange t round the lower edge, which is cut away where the troughs commence to form an entry to the same. The shield in this case is arranged in the bowl in the same way and acts in a similar manner.

What I claim is:

1. In a liquid separator, a bowl, a cover therefor having an opening in its upper part,

and with inclined projections upon said upper part, a skimming shield within said cover and having a neck extending outwardly through the opening aforesaid and provided with snugs, which engage the inclined projections aforesaid, for tightening the skimming shield in place.

2. In a liquid separator having a bowl, a number of liner plates and a cover, an opening in the upper part of said cover, inclined projections upon said upper art and around said opening, and a separab e grooved skimming shield within said cover with a neck extending through the said opening in said cover, and snu s on the said neck adapted to engage said inc ined projections on said cover to draw the skimming shield tight against the inside thereof.

3. In a liquid separator having a bowl, a number of liner plates, and a cover, the combination of a cover having inclines 011 its upper part with a skimming shield having a pair of snugs for engaging said inclines, the said shield further having grooves up its sides.

4. In a liquid separator, a bowl, a number of liner plates, a cover, a skimming shield having milk grooves, and a fastening device, between said cover and said skimming shield, comprising snugs and inclines.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing Witnesses.

ERNEST WEBBER RICHMOND.

Witnesses:

AUsTIN A. LISTER, GEO. J. NORRIS. 

